DOI: 10.1073/pnas.0806039105
论文题名: Frequency-dependent selection maintains clonal diversity in an asexual organism
作者: Weeks A.R. ; Hoffmann A.A.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2008
卷: 105, 期: 46 起始页码: 17872
结束页码: 17877
语种: 英语
英文关键词: Clone
; Genetic variation
; Maintenance
; Niche
; Penthaleus major
Scopus关键词: amplified fragment length polymorphism
; article
; clonal variation
; controlled study
; DNA fingerprinting
; genetic polymorphism
; genetic variability
; mesocosm
; mite
; nonhuman
; priority journal
; Analysis of Variance
; Animals
; Clone Cells
; Genetic Variation
; Mites
; Phylogeny
; Population Dynamics
; Regression Analysis
; Reproduction, Asexual
; Selection (Genetics)
; Acari
; Penthaleus major
英文摘要: Asexual organisms can be genetically variable and evolve through time, yet it is not known how genetic diversity is maintained in populations. In sexual organisms, negative frequency-dependent selection plays a role in maintaining diversity at some loci, but in asexual organisms, this mechanism could provide a general explanation for persistent genetic diversity because it acts on the whole genome and not just on some polymorphisms within a genome. Using field manipulations, we show that negative frequency-dependent selection maintains clonal diversity in an asexual mite species, and we link predicted equilibrium clonal frequencies to average frequencies in space and time. Intense frequency-dependent selection is likely to be a general mechanism for persistent genetic diversity in asexual organisms. © 2008 by The National Academy of Sciences of the USA. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162234
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: Weeks, A.R., Centre for Environmental Stress and Adaptation Research, Department of Genetics, University of Melbourne, Parkville, VIC 3010, Australia; Hoffmann, A.A., Centre for Environmental Stress and Adaptation Research, Department of Genetics, University of Melbourne, Parkville, VIC 3010, Australia
Recommended Citation:
Weeks A.R.,Hoffmann A.A.. Frequency-dependent selection maintains clonal diversity in an asexual organism[J]. Proceedings of the National Academy of Sciences of the United States of America,2008-01-01,105(46)